Determine an expression for the instantaneous power in the circuit p = iv, "AS THE SUM OF 2 COSINES"
If I is 0.003 Amps and V is 5 volts, calculate the maximum value of p, giving the answer in watts correct to 3 significant figures, and the first positive value of t at which it occurs.
Electric Power is the product of Voltage and the Current. If V and I are expressed in terms of sin and cos, the product of the two expressions can be manipulated using standard trigonometric identities to get a consolidated answer. This problem illustrates this methodology with the help of a simple question.